.formula-input {
  position: relative;
  width: 100%;
  padding: 20px;
  border: 1px solid #e9e9e9;
  border-radius: 4px;
  height: 110px;
  cursor: text;
  line-height: 20px;
  &-cursor {
    position: absolute;
    width: 1px;
    height: 20px;
    background: black;
    animation: cursor_flush 1s infinite linear;
  }
  .factor {
    word-break: break-word;
    display: inline-block;
    height: 20px;
    font-size: 12px;
  }
}

@keyframes cursor_flush {
  0% {
    opacity: 1;
  }
  49% {
    opacity: 1;
  }
  50% {
    opacity: 0;
  }
  99% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}
